Variations of geometric invariant quotients for pairs, a computational approach

Patricio Gallardo, Jesus Martinez-Garcia
2018 Proceedings of the American Mathematical Society  
We study the GIT compactifications of pairs formed by a hypersurface and a hyperplane. We provide a general setting to characterize all polarizations which give rise to different GIT quotients. Furthermore, we describe a finite set of one-parameter subgroups sufficient to determine the stability of any GIT quotient. We characterize all maximal orbits of non stable and strictly semistable pairs, as well as minimal closed orbits of strictly semistable pairs. Our construction gives natural
more » ... ves natural compactifications of the space of log smooth pairs for Fano and Calabi-Yau hypersurfaces.
doi:10.1090/proc/13950 fatcat:ddmd6mobgrcjxhd7ivmylelkpe